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Basic Information

Molecular Structure:
CAS No.:	16872-11-0
Name:	Fluoroboric acid

Formula:	HBF₄
Molecular Weight:	87.81
Synonyms:	Borate(1-),tetrafluoro-, hydrogen (8CI,9CI);Fluoboric acid (HBF4) (6CI);Borofluoricacid;HBF4;Hydrogen tetrafluoroborate;Hydrogentetrafluoroborate(1-);Tetrafluoroboric acid;
EINECS:	240-898-3
Density:	1.38 g/cm³
Melting Point:	-90 °C
Boiling Point:	130 °C (dec.)
Flash Point:	-40 °F
Solubility:	MISCIBLE
Appearance:	colourless liquid
Hazard Symbols:	C
Risk Codes:	34
Safety:	26-36/37/39-45-37
Transport Information:	UN 1775 8/PG 2
PSA:	0.00000
LogP:	1.41250

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Chemistry

Structure of Hydrofluoboric acid (CAS NO.16872-11-0):

IUPAC Name: hydron tetrafluoroborate
Molecular Formula: HBF₄
Molecular Weight: 87.81
Density: 1.41
Melting point: -90 ºC
Boiling point: 130 ºC (dec.)
Water solubility: MISCIBLE
Synonyms of Hydrofluoboric acid (CAS NO.16872-11-0): Borate(1-), tetrafluoro-, hydrogen ; Borofluoric acid ; Fluoboric acid ; Fluoroboric acid ; Hydrogen tetrafluoroborate ; Hydrogen tetrafluoroborate(1-) ; Tetrafluoroboric acid .

Uses

Hydrofluoboric acid (CAS NO.16872-11-0) is used to clean metal surface and alloy surface before electroplated.

Toxicity Data With Reference

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LDLo	oral	50mg/kg (50mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: ATAXIA	National Technical Information Service. Vol. OTS0570943,
rat	LD50	intraperitoneal	10mg/kg (10mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: ATAXIA	National Technical Information Service. Vol. OTS0570943,
rat	LD50	oral	100mg/kg (100mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: ATAXIA	National Technical Information Service. Vol. OTS0570943,

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Safety Information of Hydrofluoboric acid (CAS NO.16872-11-0):
Hazard Codes:C
Risk Statements:34
34:Causes burns
Safety Statements:26-36/37/39-45-37
26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36/37/39:Wear suitable protective clothing, gloves and eye/face protection
45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
37:Wear suitable gloves
RIDADR:UN 1775 8/PG 2
WGK Germany:1
RTECS:ED2685000
F:3
Hazard Note:Corrosive
HazardClass:8
PackingGroup:II
A severe corrosive. A severe skin and eye irritant. When heated to decomposition it emits toxic vapors of boron and F⁻.

Standards and Recommendations

OSHA PEL: TWA 2.5 mg(F)/m³
NIOSH REL: (Fluorides, inorganic) TWA 2.5 mg(F)/m³
DOT Classification: 8; Label: Corrosive